VC/Vidyo: Update tests to use dummy_avatar fixture
VC/Vidyo: Update tests to use dummy_avatar fixture

indico/indico-plugins,indico/indico-plugins,indico/indico-plugins,ThiefMaster/indico-plugins,ThiefMaster/indico-plugins,indico/indico-plugins,ThiefMaster/indico-plugins,ThiefMaster/indico-plugins